Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Initiative top coal caving crushing hydraulic support

A hydraulic support and top-coal caving technology, which is applied in mine roof support, mining equipment, earthwork drilling, etc., can solve the problems of poor top-coal crushing effect affecting top-coal recovery rate, etc., and achieves reasonable and reliable structural design, simple structure, The effect of improving efficiency

Inactive Publication Date: 2016-08-24
TAIYUAN UNIV OF TECH
View PDF5 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the existing top-coal caving hydraulic support has poor top-coal crushing effect and affects the top-coal recovery rate, the present invention provides a top-coal caving active crushing hydraulic support

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Initiative top coal caving crushing hydraulic support

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0010] A hydraulic support for active top coal crushing includes a base 1 and a top beam 2. An inner top beam 3 is embedded in the middle of the top beam 2, and an inner telescopic vertical column 4 hinged between the inner top beam 3 and the base 1 is provided. Between the top beam 2 outside the inner top beam 3 and the base 1 is provided an external telescopic column 5 hinged to the two, the upper end of the inner top beam 3 is provided with an impact vibrating table 6, and the upper end of the impact vibrating table 6 is provided with an inner coal breaking plate 7 , The upper ends of the top beams 2 on the left and right sides of the shock vibration table 6 are provided with external coal-breaking plates 8.

[0011] In the specific implementation process, the top beam 2 has a width of 1500 mm, a length of 6000 mm, and a thickness of 200 mm. The middle gap of the top beam 2 has a width of 500 mm, a length of 2000 mm, and a depth of 100 mm, which are used to inlay the inner roof...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to an initiative top coal caving crushing hydraulic support, which solves the problems that the existing top coal caving hydraulic support is poor in top coal caving crushing effect and influences the yield of top coal. The initiative top coal caving crushing hydraulic support comprises a base and a top beam, wherein an inner top beam is embedded in the middle part of the top beam, inner telescopic stand columns which are hinged with the inner top beam and the base are arranged between the inner top beam and the base, outer telescopic stand columns which are hinged with the top beam and the base are arranged between the top beam and the base at the outer side of the inner top beam, an impact vibration platform is arranged at the upper end of each inner top beam, an inner coal breaking plate is arranged at the upper end of the impact vibration platform, and outer coal breaking plates are respectively arranged on the upper end surface of the top beam at the left side and the right side of the impact vibration platform. By adopting the initiative top coal caving crushing hydraulic support, a coal caving arch structure is destroyed, and the efficiency for crushing the top coal is improved; moreover, the top coal can be crushed into loosened coal sheets and can be effectively discharged from a coal caving opening; and the lifting frequency of the inner and outer telescopic stand columns and the movement frequency of the inner top beam and the coal breaking plates are controlled by virtue of an overflow valve. The initiative top coal caving crushing hydraulic support has the advantages of simple structure, convenient operation and low cost.

Description

Technical field [0001] The invention relates to a hydraulic support for underground coal mines, in particular to a hydraulic support for active top coal crushing. Background technique [0002] With the development of top coal mining technology, the requirements for the performance of hydraulic supports have gradually increased. In the process of top coal caving mining, the top coal can only be discharged from the caving mouth only when the top, middle or tail of the support beam is completely changed into loose and broken coal. Under special conditions such as shallow depth and hard top coal, the leading support pressure of the working face is not enough to crush the top coal to a suitable size, resulting in a low top coal recovery rate. [0003] The existing hydraulic supports used in the top coal mining process cannot actively and effectively break the top coal and increase the top coal caving rate, which is not conducive to the crushing of the medium-hard top coal and affects t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): E21D23/04
CPCE21D23/04
Inventor 杨永康张彦斌康天合郭泽峰季春旭张智敏
Owner TAIYUAN UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com